Core-box planer



(MMM) o. H. s. COLLINS.

A vGORE BOX PLANER.v No. 345,278. Patented Ju1y'13, 1886.

Ein! @taxa Unire rares arena" 'Errea CHARLES HENRY SLICER COLLINS, CF CLEVELAND, CHIC.

CORE=BOX PLANER.

SPECIFICATION' termin@ part of Letters Patent No. 345,278, dated July 13, 1886.

Application tiled March 17, 1836.

To all whom, t may concern:

Beitknown that l, CHARLES HENRY SLICER COLLINS, a citizen ofthe United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and useful Improvement in Core-Box Planes, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to an improvement in core-box planes; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figurel is a side elevation of my invention, partly in section. Fig. 2 is a front elevation of the same, showing` the plane in operative position for planing a semicylindrical surface in a core-box. Fig. 3 is a detailed end elevation of the frame. Fig. 4 is a detailsectional view ot' the same, taken on the line a: x of Fig. l.

A represents the frame of the plane, which is composed ofthe metallic plates B, secured together at one edge and extending at right angles from each other. lhe plates B are connected at their front and rear ends by brace; plates C. In the angle formed by the two plates B, near the rear end of the same, is secured a handle, D, and in the angle formed by the two plates and near the front ends thereot is secured a projecting stud or standard, E, for the operator to take hold of with his lett hand, his right hand grasping the handle D.

E represents a block, which is located in the angle formed by the plates D, and extends vertically midway between said plates. The front side of this block is inclined at an angle of about forty-tive degrees, and is provided on opposite sides of the web of the block with flanges c, forming a broad bearing-face for the bit F, the point of which is beveled on opposite sides, as shown in Fig. 2, and extends through an opening, G, made between the converging edges of the plates B, in rear of the standard E.

H represents a clamp, which is provided with depending arms having inwardly-proj ecting studs that engage the under sides of the anges e of the block E', the said clamp having a spring, i, which bears on the upper side ot' the plane-bit, and provided with a thumblatch, K, which is pivoted in the rear end of Serial No. 105,610. (No model.)

l the clamp Il and bears against the outer end ofthe spring. By this construction it will be readily understood that the plane-bit may be secured to the frame A at any desired adjustment, and moved in or out through the opening G in the said frame.

ln Fig. 8, L represents extension plates 'which are provided on one edge with extended arms M, through which arms pass screws N, that work in threaded openings O, made near the upper edges of the plates B, whereby the said extension-plates L may be secured to the outeredges of the plate B, or removed theref rom. By thus providing the extension-plates for the side plates of the frame of the plane, the latter is adapted forA planing semi-cylindrical openings or grooves of any desired diameter.

The operation of the plane will be readily understood from 'an inspection of Fig. 2 and the foregoing description. The groove in the scribed.

2. In a core-box plane, the frame comprising the rigid sides B, arranged at right angles to each other, the rigid plates C, connecting the sides at the ends, and the extension-plates L, secured to the outer edges of the sides B, and extending upward at the same angle as the sides, for the purpose set forth.

In testimony that I claim the foregoing as my own I have-hereto affixed my signature in presence of two witnesses.

CllAS. HENRY SLICER COLLINS.

Witnesses:

J osErH GOBEILLE, i FREDERICK JAEEZ RANDALL.

coreebox a is iirst roughly gouged out, as shown,

invention, I

for the purpose set forth, substantially as de- Y 

